Corey writes – “This weekend I spent a lot of time working on my MAME cabinet. In the control panel, each button and joystick needed a 1 1/8″ hole drilled. This meant 20 holes in my configuration. With my handy Craftsman battery powered drill and 2 fully charged batteries I went to work. I was only able to drill 3 holes per battery. (this is 3/4″ MDF, strong stuff.. gotta drill about a few millimeters at a time and clean out the hole and teeth before going further)” So he added a 12volt 50 amp-hour gel cell battery and finished the job, more power! – Thanks Saint! Link.